[Bug 289297] Intel Xeon 6 with high number of threads

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 289297] Intel Xeon 6 with high number of threads : kernel panic"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 12 Sep 2025 15:31:33 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=289297

John Baldwin <jhb@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jhb@FreeBSD.org

--- Comment #6 from John Baldwin <jhb@FreeBSD.org> ---
The first panic looks like a bug in em(4) and/or iflib where it tries to free a
resource that hasn't been allocated.  I wonder if the relevant structure isn't
allocated with M_ZERO and iflib sees the 0xdeadc0de junk as non-NULL and tries
to use it as a struct resource pointer.

The second panic is also in iflib, perhaps not handling kern.smp.disabled=1
correctly?

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